/* ============================
   Стили: минимализм + акцент на удобочитаемость
   Шрифт: Roboto
   Тёмная тема включается автоматически ночью (локальное время)
============================= */
:root {
  --bg: #ffffff;
  --fg: #0f1720;
  --muted: #5f6b7a;
  --panel: #f5f7fa;
  --border: #e5e9f0;
  --primary: #0ea5e9;  /* голубой */
  --primary-pressed: #0284c7;
  --success: #22c55e;
  --danger: #ef4444;
  --shadow: 0 8px 30px rgba(0,0,0,.08);
}

.dark {
  --bg: #0e131a;
  --fg: #e5eef7;
  --muted: #9fb2c9;
  --panel: #141a23;
  --border: #1f2a37;
  --primary: #38bdf8;
  --primary-pressed: #0ea5e9;
  --shadow: 0 10px 36px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body {
  height: 100%;
}
body {
  margin: 0;
  font-family: "Roboto", system-ui, -apple-system, Segoe UI, Arial, sans-serif;
  background: var(--bg);
  color: var(--fg);
}

/* Layout */
.page {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center; /* по вертикали */
  gap: 20px;
  padding: 24px;
}

.header {
  width: min(1100px, 100%);
  display: flex;
  align-items: center;
  justify-content: space-between; /* по горизонтали */
  gap: 16px;
}
h1 {
  font-size: clamp(20px, 2.4vw, 32px);
  margin: 0;
  font-weight: 700;
}

.header-actions {
  display: flex;
  gap: 8px;
}

/* Panels */
.panel {
  width: min(1100px, 100%);
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 16px;
}
.panel.center { text-align: center; }

.status-line {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}
.badge {
  display: inline-block;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--border);
  color: var(--muted);
  font-weight: 500;
  font-size: 14px;
}
.badge.hidden { display: none; }

.controls {
  display: flex;
  justify-content: center;
}

.fleet-setup {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}
.setup-row {
  display: flex;
  align-items: center;
  gap: 10px;
}
.setup-row.gap { gap: 12px; }
.remaining {
  font-size: 14px;
  color: var(--muted);
}

/* Boards */
.boards {
  display: grid;
  grid-template-columns: 1fr;
  width: min(1100px, 100%);
  gap: 18px;
  align-items: center;
  justify-items: center;
}

.board-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
}
.board-title {
  margin: 0;
  font-size: 18px;
  color: var(--muted);
}
.hint {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.board {
  display: grid;
  grid-template-columns: repeat(10, 1fr);
  gap: 6px;
  background: transparent;
  padding: 8px;
  border-radius: 16px;
  border: 1px dashed var(--border);
}
.board--small .cell {
  width: clamp(26px, 3.2vw, 34px);
  height: clamp(26px, 3.2vw, 34px);
  font-size: clamp(16px, 3.1vw, 20px);
}
.board--big .cell {
  width: clamp(36px, 4.8vw, 48px);
  height: clamp(36px, 4.8vw, 48px);
  font-size: clamp(22px, 5vw, 28px);
}

/* Cell buttons */
.cell {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 8px;
  cursor: pointer;
  user-select: none;
  transition: transform .08s ease, box-shadow .15s ease, border-color .15s;
  box-shadow: 0 2px 10px rgba(0,0,0,.03);
}
.cell:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.cell:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(0,0,0,.08);
  border-color: var(--primary);
}
.cell:active {
  transform: translateY(0);
  box-shadow: 0 2px 10px rgba(0,0,0,.06);
}

/* Buttons */
.btn {
  --btn-bg: var(--bg);
  --btn-fg: var(--fg);
  --btn-border: var(--border);
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--btn-border);
  background: var(--btn-bg);
  color: var(--btn-fg);
  font-weight: 600;
  cursor: pointer;
  transition: transform .08s ease, box-shadow .15s ease, background .2s, border-color .2s;
  box-shadow: var(--shadow);
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }
.btn:disabled {
  opacity: .55;
  cursor: not-allowed;
}
.btn.primary {
  --btn-bg: var(--primary);
  --btn-fg: white;
  --btn-border: transparent;
}
.btn.primary:hover { filter: brightness(1.05); }
.btn.primary:active { filter: brightness(.95); }
.btn.ghost {
  --btn-bg: transparent;
  --btn-border: var(--border);
  box-shadow: none;
}

/* Icon button */
.icon-btn {
  border: none;
  background: transparent;
  color: var(--muted);
  font-size: 18px;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: 8px;
}
.icon-btn:hover {
  background: var(--panel);
}

/* Log */
.log {
  min-height: 28px;
  font-size: 14px;
  color: var(--muted);
  text-align: center;
}

/* Footer */
.footer {
  width: min(1100px, 100%);
  text-align: center;
  color: var(--muted);
  font-size: 14px;
  padding: 8px 0 2px;
  border-top: 1px solid var(--border);
}
.footer .small { font-size: 12px; opacity: .9; }

/* Modal (кастомная реализация) */
.modal { 
  position: fixed; inset: 0; display: none; 
}
.modal[aria-hidden="false"] { display: block; }
.modal__backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.45);
}
.modal__dialog {
  position: relative;
  max-width: min(800px, 92vw);
  margin: 8vh auto;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 16px;
  box-shadow: var(--shadow);
  padding: 16px;
}
.modal__header {
  display: flex; align-items: center; justify-content: space-between;
  border-bottom: 1px solid var(--border);
  padding-bottom: 8px;
}
.modal__body {
  padding: 10px 4px;
  color: var(--fg);
}
.modal__footer {
  border-top: 1px solid var(--border);
  padding-top: 12px;
  display: flex;
  justify-content: flex-end;
}
.rules {
  font-size: 15px;
  line-height: 1.6;
}
.rules ol { padding-left: 16px; }
.rules ul { margin: 6px 0; padding-left: 20px; }

/* Адаптив */
@media (min-width: 900px) {
  .boards {
    grid-template-columns: 1fr;
  }
}